const Koa = require('koa')
const app = new Koa()
const views = require('koa-views')
const json = require('koa-json')
const onerror = require('koa-onerror')
const bodyparser = require('koa-bodyparser')
const logger = require('koa-logger')
const db = require("./db/mysqldb");
const cors = require('koa2-cors');
const rateLimit = require('koa-ratelimit');

const index = require('./routes/index')
const users = require('./routes/users')
const department = require("./routes/department")
const manager = require("./routes/manager")
const role = require("./routes/role")
const district = require("./routes/district")
const token = require("./utils/token")

// error handler
onerror(app)
app.use(cors({
  'Access-Control-Allow-Headers': 'Authorization'
}));
// middlewares
app.use(bodyparser({
  enableTypes:['json', 'form', 'text']
}))
app.use(json())
app.use(logger())
app.use(require('koa-static')(__dirname + '/public'))

app.use(views(__dirname + '/views', {
  extension: 'ejs'
}))


// logger
app.use(async (ctx, next) => {
  const start = new Date()
  await next()
  const ms = new Date() - start
  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
})

app.use(async (ctx, next) => {
  ctx.db = db;
  await next();
})

app.use(token.checkTokenMiddleware)
// routes
app.use(index.routes(), index.allowedMethods())
app.use(users.routes(), users.allowedMethods())
app.use(department.routes(), department.allowedMethods())
app.use(manager.routes(), manager.allowedMethods())
app.use(role.routes(), role.allowedMethods())
app.use(district.routes(), district.allowedMethods())

// error-handling
app.on('error', (err, ctx) => {
  console.error('server error', err, ctx)
});

module.exports = app
